Ballpoint pen



FIG. 1 is a front view of a ballpoint pen of the present invention lined to show the color silver;

FIG. 2 is a rear view thereof lined to show the color silver;

FIG. 3 is a left side view thereof lined to show the color silver;

FIG. 4 is a right side view thereof lined to show the color silver;

FIG. 5 is a top plan view thereof lined to show the color silver; and,

FIG. 6 is a bottom view thereof lined to show the color silver. 

The ornamental design for a ballpoint pen, as shown and described. 